Coating processes – Optical element produced – Polarizer – windshield – optical fiber – projection screen – or...
Patent
1990-02-28
1991-12-31
Fisher, Richard V.
Coating processes
Optical element produced
Polarizer, windshield, optical fiber, projection screen, or...
4274432, 65 311, 65 32, 65 6053, B05D 118
Patent
active
050770870
ABSTRACT:
Methods and apparatus are shown for cladding grown single crystal optical fibers. Neodymium YAG fibers are clad with a high index glass, either melted around the fiber in a trough or extruded over the fiber surface. Lithium niobate fibers are clad through an impregnation process. The lithium niobate fiber is first coated with magnesium oxide and then heated to a temperature and for a time sufficient for the magnesium oxide dopant material to diffuse into the fiber. The dopant lowers the intrinsic refractive indices of the fiber material around its circumference, creating a cladding region around the fiber core. Single crystal fibers clad by these methods and combined with suitable pumping means or with deposited electrodes provide low-loss single mode optical components useful for amplification, electro-optical effects and acousto-optical effects.
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Byer Robert L.
Cordova Amado
Digonnet Michael
Fejer Martin
Gaeta Celestino
Bruckner John J.
Fisher Richard V.
The Board of Trustees of the Leland Stanford Junior Univ.
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